Berks/Dorset/Wilts 1 (1987–1993) Originally Dorset & Wilts 1 North and
Dorset & Wilts 1 South were combined in a single division known as Berks/Dorset/Wilts 1, involving clubs based in
Berkshire,
Dorset and
Wiltshire. It was a tier 8 league with promotion to
Southern Counties and relegation to
Berks/Dorset/Wilts 2.
Berks/Dorset/Wilts 1 (1993–1996) The creation of
National League 5 South for the 1993–94 season meant that Berks/Dorset/Wilts 1 dropped to become a tier 9 league. Promotion continued to
Southern Counties and relegation to
Berks/Dorset/Wilts 2.
Berks/Dorset/Wilts 1 (1996–2000) The cancellation of
National League 5 South at the end of the 1995–96 season meant that Berks/Dorset/Wilts 1 reverted to being a tier 8 league. Further restructuring meant that promotion was now to
Southern Counties South, while relegation continued to
Berks/Dorset/Wilts 2.
Dorset & Wilts 1 (2000–2004) At the end of the 1999–2000 season the division became known as Dorset & Wilts 1 following the departure of
Berkshire clubs to join the
Bucks & Oxon leagues. It remained a tier 8 league with promotion to
Southern Counties South and relegation to either
Dorset & Wilts 2 North or
Dorset & Wilts 2 South (both formerly part of Berks/Dorset/Wilts 2).
Dorset & Wilts 1 North (2004–2009) Ahead of the 2004–05 season, local league restructuring saw Dorset & Wilts 1 split into two tier 8 regional divisions - Dorset & Wilts 1 North and
Dorset & Wilts 1 South. Promotion continued to
Southern Counties South, while relegation was now to
Dorset & Wilts 2 North.
Dorset & Wilts 1 North (2009–present) Despite widespread restructuring by the
RFU at the end of the 2008–09 season, Dorset & Wilts 1 North remained a tier 8 league, with promotion continuing to
Southern Counties South and relegation to
Dorset & Wilts 2 North. ==Number of league titles==